I am getting a laptop soon and I really want to play sins on it. I have seen a bevy of different options but two stick out, the GeForce 8600 GT and the Radeon HD 2600 (512meg of memory on both). While they seem decent, I am leery of any mobile graphics card, as they are not supposed to be very good. I will be playing the game in a resolution of around 1280 by 800 but I will want to max out the graphics options. So will either of these mobile cards be able to do this and what kind of performance can I expect?

This laptop will have two baseline specs as it is for work as well. These are a 2.2 GHz Core 2 Duo, 4 GB of PC 54000 ram. My HD is most likely going to be a 5400 rpm drive, is this bad? Last thing to mention is I will be running Vista Home Premium (64 bit), I know, I know. I still like Vista though...

If anyone can help me out I would be grateful.